railroad line operating over private tracks
Refers to a railway line that runs on tracks owned by the operating company, as opposed to using tracks owned by another entity. Often used in contrast with 軌道線 (track line) or in contexts discussing railway classification.
This railroad line runs entirely on tracks owned by the company itself.
Different laws apply to railroad lines operating over private tracks and tram lines.
鉄道 is the general term for railway or railroad, while 鉄道線 specifically denotes a line that operates on privately owned tracks.
Compound of 鉄道 (railway) and 線 (line). The specific meaning 'railroad operating over private tracks' arises from legal and operational contexts distinguishing it from other types of rail lines.